2010
DOI: 10.1016/j.ijhydene.2009.12.131
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ZnO-based nanocrystalline powders with applications in hybrid photovoltaic cells

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Cited by 14 publications
(6 citation statements)
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“…While for doped powders, a progressive diffraction peaks intensity diminution corresponding to the minority phase was found, indicating cation substitution at the final state of milling. This conclusion was also arrived from positron annihilation lifetime experiments [6]. Among others IIeVI semiconductors, ZnSe and ZnTe have also good opto-electrical properties and may be potentially the main components for new categories of solar cells.…”
Section: Introductionmentioning
confidence: 59%
“…While for doped powders, a progressive diffraction peaks intensity diminution corresponding to the minority phase was found, indicating cation substitution at the final state of milling. This conclusion was also arrived from positron annihilation lifetime experiments [6]. Among others IIeVI semiconductors, ZnSe and ZnTe have also good opto-electrical properties and may be potentially the main components for new categories of solar cells.…”
Section: Introductionmentioning
confidence: 59%
“…In figure 8 we show the predicted τ values for the ZnSe_AlxZn, ZnSe_AlxZn+V Zn , ZnSe_V Zn , and ZnSe_AlxSe (upper) and ZnTe_AlxZn, ZnTe_AlxZn+V Zn , ZnTe_V Zn , and ZnTe_AlxTe (bottom), as a function of the defect dilution. As shown in a previous work [23] the substitution of a Zn atom by an Al one does not modify the τ value, moreover this fact was applied to sense experimentally the dopant incorporation into the host crystalline structure [19,20]. The substitution of an Al atom by a Se (Te) one in ZnSe (ZnTe) also does not modify substantially the τ value and converge to the values predicted for the undoped ZnSe (ZnTe) semiconductor as the dilution of the Al impurity increases.…”
Section: Ab Initio Calculationsmentioning
confidence: 82%
“…The increase of the average lifetime above the positron lifetime in bulk indicates vacancytype defects presence [19][20][21][22]30]. In figure 4 the average lifetime for all the analyzed samples is displayed, showing the clear presence of open volume defects.…”
Section: Positron Annihilation Lifetime Spectroscopy (Pals)mentioning
confidence: 94%
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“…Dye-sensitized solar cells (DSSCs) are unique and attractive devices for the conversion of solar energy into electricity based on sensitization of wide band gap semiconductors [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. In general in DSSCs dye molecules adsorbed on the surface of nanocrystalline ZnO are photoexcited by incident light and inject electrons into the conducting band of ZnO.…”
Section: Introductionmentioning
confidence: 99%